Pedal for foot-driven machines



Patented Mar. 7, I899.

E. KLAHN.

PEDAL FOB FOOT DRIVEN MACHINES.

(Application filed Nov. 3, 1898.)

2 Sh-aetsSh eet I.

(No Model.)

WITNESSES:

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No. 620,784. Patented Man 7, I899.

E. KLAHN.

PEDAL FOB FOOT DRIVEN MACHINES.

(Application filed Nov. 3, 1898.) (No Model.) 2 Sheets-$heet 2.

UNITED STATES PATENT OFFICE.

EMIL KLAHN, OF WEST HOBOKEN, NEWV JERSEY, ASSIGNOR OF ONE-HALF TO GUSTAVUS E. STRAUSS, OF PLAINFIELD, NEYV JERSEY.

PEDAL FOR FOOT-DRIVEN MACHINES.

SPECIFICATION forming part of Letters Patent No. 620,784, dated March 7, 1899.

Application filed November 3, 1898. Serial No. 695,379. (No model.) i

To all whom it may concern:

Be it known that I, EMIL KLAHN, a citizen of the United States, and a resident of West Hoboken, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Pedals for Foot- Driven Machines, of which the following is a specification.

Myinvention has reference to improvements in pedals for foot-driven machines; and it consists in a pedal the spindle of which is inclosed by a sleeve held in place by a shell of semicylindrical cross-section and two inclosin g end rings, the foot-supporting wings being integral with the said shell. By this construction the manufacture of pedals is greatly simplified and the expenses of manufacturing the same reduced.

My improved pedal is illustrated in the accompanying drawings, in which Figure 1 is a top,and Fig. 2 a side,view of the same. Fig. 3 is a longitudinal section. Figs. 4 and 5 are sections on lines at 4 and 5 5, respectively, of 'Fig. 3. 'Fig. 6 is a detail showing one of the end rings, and Figs. 7 and 8 are views of the shell with the foot-supporting wings.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A is a shell of semicylindrical shape which has on its longitudinal edges outwardlyflaring and upwardly-extendin g side plates or wings a,which form the foot-supports of the pedal. The shell and wings are preferably integral and consist of a flat metal plate with two lateral extensions which form the said wings, as shown by the blank illustrated in Fig. '7, the plate being semicylindrically and the wings outwardly and upwardly bent, as shown in Figs. 4 and 5.

B is a sleeve which is located in the shell A and longitudinally split, whereby a certain spring action is imparted to the sleeve, so that the same presses against the shell A and secures thereby a better hold in the latter.

0.0 are two rings which have two horizontal incisions or notches c c, and are near their in cisions so depressed that they firmly inclose the shell with the sleeve, as shown in Figs. 4 and 5. The incisions 0 enable the rings to be partially slipped over the end portions of the shell and sleeve, the incisions 0 allowing the end edges of the wingsto slip therein, so that when the rings are fastened upon the shell and sleeve by soldering or otherwise a compact pedal consisting of a tube with outwardly and upwardly extending wings is formed. In the tube thus obtained the outer rims of the rings and of the shell are in line with each' other, as shown in Fig. 3.

D D are two cups as generally used in ball bearings, which cups are pushed into the outer ends of rings 0, which form the end openings of the tube until they abut against the rims of the sleeve B. The sleeve Bis preferably made shorter than the shell A, as indicated in Fig. 3, so that when the rings are fitted to the shell and sleeve theyproject beyond the ends of the sleeve sufficiently to accommodate the bearing members D, which bearing members may be of any suitable construction, but are preferably ball cups or races, as shown. The ends of the sleeve 13 form abutments within therings 0, against which the bearing members D can set, so that the bearing members are kept properly sepa= rated by the sleeve.

It will be observed that the split sleeve is placed split downward within the shell, so that the split opening in the sleeve will be covered by the shell and dust effectively excluded from the interior of the pedal. The split sleeve can be formed out of a fiat metal sheet, which may be easily stamped or embossed before bending. The split sleeve Bis also preferably made of slightly-larger diameter than the interior of the rings 0, so that when its ends are inserted in the rings they will fit very closely therein and maintain a close joint therewith by the expanding spring action of the sleeve.

The end rings 0 not only securely unite the sleeve and shell, but by reason of their peculiar shape their upper parts form complete 'circles in connection with the semicylindrical ends of the shell, so that the bearing members or ball-races D fit closely and perfectly between the upper parts of the rings and the ends of the shell, as indicated in Fig. 3. The peculiar formation of the rings and the shell gives a preponderance of weight to the lower part of the pedal, so that the foot-rests will be kept uppermost by gravity of the pedal, which will always turn right side up.

The spindle F is on one end provided with a fixed cone E and has on the other end a second cone E, which is screwed upon the spindle. This end of the spindle has a screwthreaded excavation to receive a screw-pin f. The thread of the excavation has an opposite direction to the outer thread for the cone E.

\Vhen the pedal is completed by putting the shell, the sleeve, and the end rings together, as described, and the cups D D inserted into the end openings of the tube and fastened therein, balls 6 c are placed into one cup and the spindle then pushed through the tube until the fixed cone rests on the said balls. A second series of balls is then placed into the second cup and the adjustable cone E then screwed upon the screw-threaded end of the spindle until the required contact of the balls with the respective cups and cones forming the ball-chambers is obtained. The screw-pin f is then screwed into the excavation of the spindle until the head of the pin rests on the adjustable cone and holds the latter in reliable position.

By making the inner and outer screwthreads of the spindle in opposite directions the screw-pin f will when the pedal is used and the spindle rotated have a tendency to counteract the rotation of the spindle and cone E, and thereby not allow a loosening of the latter, but continuously secure a tight attachment of the same to the spindle.

This pedal is not only very simple and comparatively cheap to manufacture, but has several advantages over the pedals of the usual construction, which advantages consist in its greater lightness, in its being more perfectly dust-proof, and in the ease with which it can be taken apart for the purpose of lubricating I and cleaning.

claim as new and desire to secure by Letters Patent- 1. A pedal consisting of a semicylindrical shell having foot-supports on its opposite edges, a sleeve fitted in the shell, and end rings fitted over the ends of the shell and sleeve and holding the sleeve in the shell, said secured to the shell, substantially as and for Y the purpose described.

3. A spindle-inclosing tube for pedals consisting of a semicylindrical shell having alat eral foot-support or wing on each of its opposite side edges, and a spindle-inclosing sleeve shorter than the shell but fitted in the concavity thereof; with rings secu redto and uniting the ends of the shell and sleeve; and bearing members fitted in the rings and abutting against the ends of the sleeve, substantially as set forth.

4. In a pedal, the combination of an inverted semicircular shell having opposite upwardly and outwardly curved wings or footsupports on its opposite edges, a short split sleeve located, split downward, in the shell, and rings fitted over the ends of said sleeve and shell and provided with incisions to fit over the end edges of the wings, and the hearing members in said rings abutting against the ends of the sleeve, all substantially as set forth.

Signed at New York, in the county of New York and State of New York, this 1st day of November, A. D. 1898.

EMIL KLAIIN. lVitnesses:

G. E. STRAUSS, B. S. AUGSBURGER. 

